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The ES 11mm 82 degree is competitive with the T6 Nagler and much cheaper. The ES 6.7 and 30mm are also excellent. I haven't tried the others.
At 17mm (and other focal lengths) you could consider Delos - very comfortable and less likely to fog up with the long eye relief.
While many ES eyepieces are decent replacements for Televue, the 100 degree series is not among them IMO. Ethos has barely enough eye relief for the FOV while the ES equivalents have a recessed eyelens which reduces useable eye relief by 2 or 3mm.
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